I 100% agree with you and want to add something.

If you simply take what the Chinese government says at face value, you will be correct way more often than 95% of Western policy wonks, media talking heads, "analysts" and so forth. Because, like you say, they tell you everything they're doing.

In the recent US-China summit, Xi Jinping just came out and used the Thucydides Trap metaphor, which tells you everything about where China thinks it is and where it sees the US going, which is to become increasingly belligerent as their power declines. Now whether or not you agree with that assessment (I do agree), it still tells you China wants to avoid open hostilities, it sees itself as continuing to rise and it fears what a declining US might do.